09124-0707 GAA 7 (21 Hya)
09h 12m 26.05s -07° 06' 35.3" P.A. 73.00 sep 0.0 mag 6.10,6.50 Sp A0m dist. 86.73 pc (282.91 l.y.)
Coord 2000 |
09124-0707 |
|
Discov num |
GAA 7 |
|
Comp |
|
|
Coord arcsec 2000 |
09 12 26.05 -07 06 35.3 |
|
Date first |
2016 |
|
Date last |
2017 |
|
Obs |
6 |
|
Pa first |
77 |
|
Pa last |
73.2 |
|
P.A. Now (θ) |
73.2° |
|
Sep first |
0.0 |
|
Sep last |
0.001 |
|
Sep. Now (ρ) |
0.001" |
|
Mag pri |
6.10 |
|
Mag sec |
6.50 |
|
delta mag (ΔM) |
0.4 |
|
Spectral class |
A0m (white) |
|
Pri motion ra |
-019 |
|
Sec motion ra |
|
|
Pri motion dec |
+010 |
|
Sec motion dec |
|
|
Notes |
N
O
K
(See Notes, Orbital solution, K-band or other infrared magnitudes) |
|
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
21 Hya |
|
Var name |
KW Hya |
|
Constellation |
Hydra |
|
SAO |
136662 |
|
HIP |
45184 |
|
Tycho2 |
4891-01371-1 |
|
HD |
79193 |
|
HR |
3655 |
|
GC |
12704 |
|
BD |
BD-06 2845 |
|
Flamsteed |
21 Hydrae |
|
Flamsteed name |
21 Hya |
|
Distance |
86.73 |
|
Distance ly |
282.91 |
|
ORBITAL ELEMENTS
Period (P) | 7.750468d | ± 0.000006 |
Periastron (T) | 24.421d (1858.943y) | ± 0.032 |
Semi-major axis (a) | 1.329m | ± 0.007 |
Eccentricity (e) | 0.094 | ± 0.004 |
Inclination (i) | 92.5° | ± 0.26 |
Longitude of periastron (ω) | 225.38° | ± 1.6 |
Node (Ω) | 75.76° | ± 0.11 |
Notes | n | |
Reference | GaA2019 | |
Equinox | 2000 | |
Last observation | 2017 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
76.0 |
0.001 |
2001-01-01 |
74.1 |
0.001 |
2002-01-01 |
68.3 |
|
2003-01-01 |
262.1 |
0.001 |
2004-01-01 |
256.8 |
0.001 |
2005-01-01 |
254.4 |
0.001 |
2006-01-01 |
235.8 |
|
2007-01-01 |
78.5 |
0.001 |
2008-01-01 |
76.0 |
0.001 |
2009-01-01 |
74.1 |
0.001 |
2010-01-01 |
68.1 |
|
2011-01-01 |
261.9 |
0.001 |
2012-01-01 |
256.8 |
0.001 |
2013-01-01 |
254.3 |
0.001 |
2014-01-01 |
234.0 |
|
2015-01-01 |
78.4 |
0.001 |
2016-01-01 |
75.9 |
0.001 |
2017-01-01 |
74.0 |
0.001 |
2018-01-01 |
67.9 |
|
2019-01-01 |
261.8 |
0.001 |
2020-01-01 |
256.8 |
0.001 |
2021-01-01 |
254.3 |
0.001 |
2022-01-01 |
231.9 |
|
2023-01-01 |
78.4 |
0.001 |
2024-01-01 |
75.9 |
0.001 |
2025-01-01 |
74.0 |
0.001 |
2026-01-01 |
67.7 |
|
2027-01-01 |
261.6 |
0.001 |
2028-01-01 |
256.7 |
0.001 |
2029-01-01 |
254.3 |
0.001 |
2030-01-01 |
229.4 |
|
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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WDS 09124-0707 GAA 7 (21 Hya) : NOTES
discov_num |
notes |
refcode |
GAA 7 |
KW Hya. |
|
|
Ma,Mb = 1.975 +/- 0.028 , 1.487 +/- 0.013 \msun, |
GaA2019 |
|
orbital parallax = 11.462 +/- 0.074 mas. |
|
REFERENCES
refcode |
metd |
author |
reference |
GaA2019 |
Kv j |
Gallenne, A., Pietrzynski, G., Graczyk, D., Pilecki, B., Storm, J., Nardetto, N., |
2019A&A...632A..31G |
GaA2019 |
+orb |
Taormina, M., Gieren, W., Tkachenko, A., Kervella, P., Merand, A. & Weber, M. |
|
GaA2019 |
|
A&A 632, A31, 2019 |
|
WDS HISTORIC DATA
coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
09124-0707 |
GAA 7 |
|
2017 |
6 |
73 |
0.0 |
6.10 |
6.50 |
A0m |
NO K |
091226.05-070635.3 |
If you need more information about this double, apply for a
data request form to the WDS.
WDS 09124-0707 GAA 7 (21 Hya) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 09124-0707 GAA 7 (21 Hya) : MEASURES
No records found.
WDS 09124-0707 (21 Hya) : VIRTUAL EYEPIECE
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
|
|
WDS 09124-0707 (21 Hya) : ALADIN DSS IMAGE @ 09h 12m 26.05s -07° 06' 35.3"
WDS 09124-0707 GAA 7 (21 Hya) : NEIGHBORHOODS
|
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
|
Show |
name |
coord_2000 |
discov# |
comp |
pa |
sep |
dist(') |
Show |
|
09124-0707 |
GAA 7 |
|
73 |
0.0 |
|
Show |
|
09124-0709 |
HJ 807 |
AB |
291 |
14.8 |
3 |
Show |
|
09124-0709 |
HJ 807 |
AC |
51 |
20.0 |
3 |
Show |
|
09124-0656 |
A 2973 |
|
12 |
2.9 |
11 |
Show |
|
09122-0729 |
A 2972 |
|
341 |
4.4 |
23 |
Show |
|
09110-0736 |
RST3626 |
|
22 |
0.2 |
37 |
Show |
|
09160-0659 |
J 2650 |
|
19 |
8.2 |
54 |
Show |
|
09155-0751 |
RST3629 |
|
345 |
1.0 |
63 |
Show |
|
09079-0708 |
STF1316 |
BC |
296 |
14.2 |
68 |
Show |
|
09079-0708 |
STF1316 |
AB |
136 |
7.2 |
68 |
Show |
|
09079-0708 |
STF1316 |
AC |
280 |
8.1 |
68 |
Show |
|
09079-0708 |
TOK 64 |
Aa,Ab |
294 |
0.4 |
68 |
Show |
|
09143-0817 |
BU 908 |
A,BC |
182 |
60.8 |
76 |
Show |
|
09143-0817 |
BU 908 |
BC |
233 |
0.9 |
77 |
Show |
|
09143-0817 |
BU 908 |
BD |
299 |
34.1 |
77 |
Show |
|
09167-0621 |
KUI 40 |
|
287 |
1.3 |
79 |
Show |
|
09151-0825 |
GCB 22 |
|
109 |
6.4 |
89 |
Show |
|
09161-0821 |
BU 212 |
|
198 |
1.6 |
93 |
Show |
|
09185-0733 |
J 2651 |
|
209 |
3.9 |
93 |
Show |
|
09159-0831 |
J 3249 |
|
152 |
3.7 |
100 |
Show |
|
09085-0538 |
A 123 |
CD |
178 |
4.6 |
105 |
Show |
|
09087-0835 |
KUI 38 |
|
299 |
1.3 |
105 |
Show |
|
09149-0845 |
WEI 21 |
|
15 |
26.5 |
106 |
Show |
|
09171-0827 |
J 745 |
|
214 |
3.3 |
107 |
Show |
|
09085-0538 |
A 123 |
AB |
327 |
1.5 |
107 |
Show |
|
09085-0538 |
A 123 |
AC |
149 |
143.2 |
107 |
Show |
|
09096-0847 |
BRT 426 |
|
182 |
7.8 |
110 |
Show |
|
09169-0538 |
HJ 127 |
|
285 |
12.6 |
112 |
Show |
|
09170-0531 |
GWP1155 |
|
202 |
17.8 |
118 |
Show |
|
09057-0816 |
FAL 26 |
|
347 |
17.2 |
122 |
Show |
|
09169-0524 |
OSO 27 |
AB |
73 |
10.6 |
123 |
Show |
|
09169-0524 |
OSO 27 |
AC |
321 |
20.2 |
123 |
Show |
|
09207-0742 |
A 1082 |
AB |
200 |
0.6 |
128 |
Show |
|
09047-0806 |
J 2895 |
|
170 |
7.6 |
129 |
Show |
|
09207-0742 |
BGH 4 |
CA |
326 |
135.0 |
130 |
Show |
|
09207-0742 |
TOK 527 |
CD |
342 |
999.9 |
130 |
Show |
|
09068-0848 |
SKF 252 |
|
264 |
8.4 |
133 |
Show |
|
09109-0455 |
HJ 2485 |
|
171 |
6.1 |
133 |
Show |
|
09203-0817 |
GCB 24 |
|
298 |
7.1 |
138 |
Show |
|
09188-0846 |
LDS3872 |
|
72 |
28.2 |
139 |
Show |
|
09203-0822 |
AG 339 |
|
28 |
6.1 |
140 |
Show |
|
09204-0821 |
J 1545 |
|
19 |
11.2 |
140 |
Show |
|
09030-0709 |
TVB 209 |
|
200 |
1.5 |
142 |
Show |
|
09196-0842 |
TDS6470 |
|
106 |
0.4 |
143 |
Show |
|
09036-0610 |
BRT 425 |
|
150 |
3.6 |
146 |
Show |
|
09224-0759 |
TDS6512 |
|
58 |
0.5 |
157 |
Show |
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09143-0430 |
RST4432 |
|
173 |
1.5 |
159 |
Show |
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09230-0735 |
UC 1784 |
|
267 |
23.7 |
160 |
Show |
|
09229-0753 |
BRT 428 |
|
191 |
4.3 |
163 |
Show |
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09013-0650 |
A 1340 |
|
2 |
0.9 |
167 |
Show |
|
09167-0941 |
HDO 122 |
|
93 |
8.9 |
167 |
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WDS 09124-0707 : COMPONENTS
09124-0707 A
Componente originario normalizzato |
AB |
|
Name |
21 Hya |
|
Coord arcsec 2000 |
091226.05-070635.3 |
|
Mag |
6.1 |
|
Spectral class |
A0m (white) |
|
PmRA |
-19.00 |
|
PmDE |
10.0 |
|
SAO |
136662 |
|
HIP |
45184 |
|
Tycho2 |
4891-01371-1 |
|
HD |
79193 |
|
HR |
3655 |
|
GC |
12704 |
|
BD |
BD-06 2845 |
|
Flamsteed |
21 Hydrae |
|
Flamsteed name |
21 Hya |
|
Tycho2 |
4891-01371-1 |
|
Pflag |
|
|
RAmdeg |
138.10851598 |
|
DEmdeg |
-7.10983217 |
|
PmRA |
-18.5 |
|
PmDE |
19.6 |
|
E RAmdeg |
4 |
|
E DEmdeg |
4 |
|
E pmRA |
1.0 |
|
E pmDE |
1.0 |
|
EpRAm |
1991.40 |
|
EpDEm |
1991.47 |
|
Num |
13 |
|
Q RAmdeg |
0.8 |
|
Q DEmdeg |
0.8 |
|
Q pmRA |
0.7 |
|
Q pmDE |
0.7 |
|
BTmag |
6.381 |
|
E BTmag |
0.015 |
|
VTmag |
6.127 |
|
E VTmag |
0.010 |
|
Prox |
999 |
|
TYC |
T |
|
HIP |
45184 |
|
CCDM |
|
|
RAdeg |
138.10855806 |
|
DEdeg |
-7.10987667 |
|
EpRA 1990 |
1.82 |
|
EpDE 1990 |
1.88 |
|
E RAdeg |
3.8 |
|
E DEdeg |
4.1 |
|
Posflg |
|
|
Corr |
0.1 |
|
SAO |
136662 |
|
DelFlag |
|
|
RA1950 |
|
|
PmRA1950 |
-0.0014 |
|
DE1950 |
|
|
PmDE1950 |
0.015 |
|
Vmag |
6 |
|
SpType |
A2 |
|
Double code |
|
|
Source |
70 |
|
CatNum |
12704 |
|
DM |
BD-06 2845 |
|
DMcomp |
|
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BDsup |
|
|
HD |
79193 |
|
M HD |
0 |
|
GC |
12704 |
|
RA1950rad |
2.39967297 |
|
DE1950rad |
-0.12049429 |
|
PmRA2000 |
-0.0011 |
|
PmDE2000 |
0.019 |
|
Catalog |
H |
|
HIP |
45184 |
|
Proxy |
|
|
RAhms |
09 12 26.05 |
|
DEdms |
-07 06 35.6 |
|
Vmag |
6.1 |
|
VarFlag |
|
|
R Vmag |
H |
|
RAdeg |
138.109 |
|
DEdeg |
-7.10988 |
|
AstroRef |
|
|
Plx |
12.1 |
|
CCDM |
|
|
N CCDM |
|
|
Nsys |
|
|
Ncomp |
1 |
|
MultFlag |
|
|
Source |
|
|
Qual |
|
|
M HIP |
|
|
Theta |
|
|
Rho |
|
|
HD |
79193 |
|
BD |
BD-06 2845 |
|
CD |
|
|
CP |
|
|
Dm number |
-06 2845 |
|
VIred |
0.26 |
|
SpType |
A3m |
|
R SpType |
|
|
Coord arcsec 2000 |
091226.05-070635.6 |
|
HIP |
45184 |
|
Sn |
5 |
|
So |
0 |
|
Nc |
1 |
|
RArad |
2.41044912 |
|
DErad |
-0.1240908079 |
|
Plx |
11.53 |
|
PmRA |
-19.03 |
|
PmDE |
21.45 |
|
E RArad |
0.36 |
|
E DErad |
0.39 |
|
E Plx |
0.42 |
|
E pmRA |
0.47 |
|
E pmDE |
0.4 |
|
Hpmag |
6.1717 |
|
E Hpmag |
0.0008 |
|
SHp |
0.008 |
|
VA |
0 |
|
BV |
0.232 |
|
E BV |
0.008 |
|
VI |
0.26 |
|
09124-0707 B
Componente originario normalizzato |
AB |
|
Coord arcsec 2000 |
091226.05-070635.3 |
|
Mag |
6.5 |
|
Calc delta mag |
0.4 |
|
Calc coord |
yes |
|